CVE-2024-50272 Information

Description

In the Linux kernel the following vulnerability has been resolved:

filemap: Fix bounds checking in filemap_read()

If the caller supplies an iocb->ki_pos value that is close to the filesystem upper limit and an iterator with a count that causes us to overflow that limit then filemap_read() enters an infinite loop.

This behaviour was discovered when testing xfstests generic/525 with the \localio\ optimisation for loopback NFS mounts.

Reference

https://git.kernel.org/stable/c/26530b757c81f1389fb33ae0357500150933161b https://git.kernel.org/stable/c/a2746ab3bbc9c6408da5cd072653ec8c24749235 https://git.kernel.org/stable/c/6450e73f4c86d481ac2e22e1bc848d346e140826 https://git.kernel.org/stable/c/ace149e0830c380ddfce7e466fe860ca502fe4ee